diff --git a/misp_stix_converter/__init__.py b/misp_stix_converter/__init__.py
index b4e5331..bb0d23c 100644
--- a/misp_stix_converter/__init__.py
+++ b/misp_stix_converter/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '2.4.196.1'
+__version__ = '20241220'
 
 import argparse
 from .misp_stix_mapping import Mapping # noqa
diff --git a/pyproject.toml b/pyproject.toml
index 508a674..bdbae54 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "misp-stix"
-version = "2.4.196.1"
+version = "20241220"
 description = "Python scripts used by MISP to export MISP format into STIX and to import STIX into MISP format."
 authors = ["Christian Studer <christian.studer@circl.lu>"]
 maintainers = ["Christian Studer <christian.studer@circl.lu>"]
@@ -42,7 +42,7 @@ misp_stix_converter = 'misp_stix_converter:main'
 
 [tool.poetry.dependencies]
 python = "^3.9"
-pymisp = "^2.4.196"
+pymisp = "^2.5.4"
 stix = "^1.2.0"
 cybox = "^2.1.0"
 mixbox = "^1.0.3"
diff --git a/setup.py b/setup.py
index 2561eda..3009339 100644
--- a/setup.py
+++ b/setup.py
@@ -23,7 +23,7 @@
     description='Python scripts to convert MISP into STIX or STIX into MISP',
     long_description=long_description,
     long_description_content_type='text/markdown',
-    python_requires='>=3.8',
+    python_requires='>=3.9',
     packages=['misp_stix_converter'],
     entry_points={"console_scripts": ["misp_stix_converter = misp_stix_converter:main"]},
     classifiers=[
@@ -34,10 +34,11 @@
         'Intended Audience :: Science/Research',
         'Intended Audience :: Telecommunications Industry',
         'Intended Audience :: Information Technology',
-        'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Topic :: Security',
         'Topic :: Internet',
     ],